توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Economist Intelligence Unit (Great Britain). (1972). Key issues in applied economics, 1947-1997: Essays in celebration of the Economist Intelligence Unit's 25th anniversary. Longman.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Economist Intelligence Unit (Great Britain). Key Issues in Applied Economics, 1947-1997: Essays in Celebration of the Economist Intelligence Unit's 25th Anniversary. [London]: Longman, 1972.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Economist Intelligence Unit (Great Britain). Key Issues in Applied Economics, 1947-1997: Essays in Celebration of the Economist Intelligence Unit's 25th Anniversary. Longman, 1972.